Home / 1,915.22-2,872.38-616.70

Finding the Fourth Proportional to 1,915.22, 2,872.38 and 616.70

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Solution

The fourth proportional to 1,915.22, 2,872.38 and 616.70 is: 924.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.22 : 2,872.38 = 616.70 : x
  2. Step 2: Convert to fraction form
    1,915.22/2,872.38 = 616.70/x
  3. Step 3: Cross multiply
    1,915.22x = 2,872.38 × 616.70
  4. Step 4: Simplify right side
    1,915.22x = 1,771,396.75
  5. Step 5: Solve for x
    x = 1,771,396.75/1,915.22
  6. Step 6: Final answer
    x = 924.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.